While researching the Dykes family of Box Twp, Cedar, Missouri, I came across Matilda and her daughter Lucy in the 1920 census.
I have that her daughter Lucy Mallory was first married to John G. Dykes (1890-1913)in about the year 1909, and they had a son named Noland Dykes, born December 1909
1910 – Box Twp, Cedar, Missouri
295/295, Page 159, 2-WD
John Dykes, 19-MO
Lucy Dykes, wife, 20-MO
Noland Dykes,son, 4 months-MO, b. ca. Dec 1909
After John Dykes died in 1913, Lucy secondly married William Cordell some time between 1913 and 1920.Mother Matilda is living with Lucy and William in 1920
1920 – Box Twp, El Dorado Springs, Cedar, Missouri
306/316, Page 50, E-WD.
William Cordell, 41-KS
Lucy Cordell, 29-MO, IL, MO
Noland Dykes, step-son, 10-MO
Matilda Stewart, mother-in-law, 64, widow, MO, IL, VA
1930 – September 29
Death Certificate – Cedar County, Missouri, File No. 29371
Mattie E. Stewart
born: 9 December 1854, Jacksonville (Morgan), Illinois
died: September 29, 1930, El Dorado Springs, Cedar, Missouri
buried: October 2, 1930, El Dorado Springs Cemetery
Daughter of J. B. Gremsley (sic s/b Grimsley) and Ellen Taylor, both of Illinois
Informant: Mrs. Cordell
Thus, if this death certificate is correct, Matilda Ellen Grimsley could not have poisoned her son Fred William Mallory in 1933 since she was deceased.